... , Nickel plating and chromate plating 3.ISO9001:2008 Machining precision parts 1. Product Introduction Item DescriptionNameCNC machining part:Copper machining ... Zehan Machinery Manufacturing CO., Ltd.(2) Main products: CNC machining precision parts: valve accessory, brass tube fittings, elbow, tee, nut; Auto ... village, Huanxiu street, Jimo, Qingdao, Shandong province, China Machining precision parts